package com.fy.gulimall.search.thread;

import java.util.concurrent.*;

public class ThreadTest {
    public static ExecutorService executor = Executors.newFixedThreadPool(10);

    public static void main(String[] args) throws ExecutionException, InterruptedException {
        // System.out.println("main......start.....");
        // Thread thread = new Thread01();
        // thread.start();
        // System.out.println("main......end.....");

        // Runable01 runable01 = new Runable01();
        // new Thread(runable01).start();

        // FutureTask<Integer> futureTask = new FutureTask<>(new Callable01());
        // new Thread(futureTask).start();
        // System.out.println(futureTask.get());

        // service.execute(new Runable01());
        // Future<Integer> submit = service.submit(new Callable01());
        // submit.get();

        System.out.println("main......start.....");
        // CompletableFuture<Void> future = CompletableFuture.runAsync(() -> {
        //     System.out.println("当前线程：" + Thread.currentThread().getId());
        //     int i = 10 / 2;
        //     System.out.println("运行结果：" + i);
        // }, executor);

        /**
         * 方法完成后的处理
         */
//        CompletableFuture<Integer> future = CompletableFuture.supplyAsync(() -> {
//            System.out.println("当前线程：" + Thread.currentThread().getId());
//            int i = 10 / 0;
//            System.out.println("运行结果：" + i);
//            return i;
//        }, executor).whenComplete((res, exception) -> {
//            //虽然能得到异常信息，但是没法修改返回数据
//            System.out.println("异步任务成功完成了...结果是：" + res + "异常是：" + exception);
//        }).exceptionally(throwable -> {
//            System.out.println("处理异常。。。。。");
//            //可以感知异常，同时返回默认值
//            return 10;
//        });
//        System.out.println("...获取异常：" + future.get());

        /**
         * 方法执行完后端处理
         */
//        CompletableFuture<Integer> future = CompletableFuture.supplyAsync(() -> {
//            System.out.println("当前线程：" + Thread.currentThread().getId());
//            int i = 10 / 2;
//            System.out.println("运行结果：" + i);
//            return i;
//        }, executor).handle((result, thr) -> {
//            if (result != null) {
//                return result * 2;
//            }
//            if (thr != null) {
//                System.out.println("异步任务成功完成了...结果是：" + result + "异常是：" + thr);
//                return 0;
//            }
//            return 0;
//        });

//        CompletableFuture<Integer> voidCompletableFuture = CompletableFuture.supplyAsync(() -> {
//            return 5;
//        }, executor).thenApply((res) -> {
//            System.out.println("接收前一个线程的执行结果：" + res + "，有返回值");
//            return 10;
//        });

        CompletableFuture<Integer> future1 = CompletableFuture.supplyAsync(() -> {
            System.out.println("任务1执行");
            return 5;
        }, executor);

        CompletableFuture<Integer> future2 = CompletableFuture.supplyAsync(() -> {
            System.out.println("任务2执行");
            return 10;
        }, executor);

//        CompletableFuture<Integer> future3 = future1.applyToEither(future2, (res) -> {
//            System.out.println("任务3执行");
//            System.out.println("接收前一个线程的执行结果：" + res + "，有返回值");
//            return 15;
//        });

        CompletableFuture<Void> allOf = CompletableFuture.allOf(future1, future2);
        allOf.get(); // 等待任务都执行完成

        CompletableFuture<Object> anyOf = CompletableFuture.anyOf(future1, future2);
        anyOf.get(); // 只要有一个完成就返回

        /**
         * 线程串行化
         * 1、thenRunL：不能获取上一步的执行结果
         * 2、thenAcceptAsync：能接受上一步结果，但是无返回值
         * 3、thenApplyAsync：能接受上一步结果，有返回值
         *
         */
//        CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {
//            System.out.println("当前线程：" + Thread.currentThread().getId());
//            int i = 10 / 2;
//            System.out.println("运行结果：" + i);
//            return i;
//        }, executor).thenApplyAsync(res -> {
//            System.out.println("任务2启动了..." + res);
//            return "Hello" + res;
//        }, executor);
//        System.out.println("main......end....." + future.get());

    }

    private static void threadPool() {

        ExecutorService threadPool = new ThreadPoolExecutor(
                200,
                10,
                10L,
                TimeUnit.SECONDS,
                new LinkedBlockingDeque<Runnable>(10000),
                Executors.defaultThreadFactory(),
                new ThreadPoolExecutor.AbortPolicy()
        );

        //定时任务的线程池
        ExecutorService service = Executors.newScheduledThreadPool(2);
    }

    public static class Thread01 extends Thread {
        @Override
        public void run() {
            System.out.println("当前线程：" + Thread.currentThread().getId());
            int i = 10 / 2;
            System.out.println("运行结果：" + i);
        }
    }

    public static class Runable01 implements Runnable {
        @Override
        public void run() {
            System.out.println("当前线程：" + Thread.currentThread().getId());
            int i = 10 / 2;
            System.out.println("运行结果：" + i);
        }
    }


    public static class Callable01 implements Callable<Integer> {
        @Override
        public Integer call() throws Exception {
            System.out.println("当前线程：" + Thread.currentThread().getId());
            int i = 10 / 2;
            System.out.println("运行结果：" + i);
            return i;
        }
    }

}
